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Types of database users

In a Vertica database, there are three types of users:.

In a Vertica database, there are three types of users:

  • Database administrator (DBADMIN)

  • Object owner

  • Everyone else (PUBLIC)

1 - Database administration user

On installation, a new Vertica database automatically contains a user with superuser privileges.

On installation, a new Vertica database automatically contains a user with superuser privileges. Unless explicitly named during installation, this user is identified as dbadmin. This user cannot be dropped and has the following irrevocable roles:

With these roles, the dbadmin user can perform all database operations. This user can also create other users with administrative privileges.

Creating additional database administrators

As the dbadmin user, you can create other users with the same privileges:

  1. Create a user:

    => CREATE USER DataBaseAdmin2;
CREATE USER

  2. Grant the appropriate roles to new user DataBaseAdmin2:

    => GRANT dbduser, dbadmin, pseudosuperuser to DataBaseAdmin2;
GRANT ROLE

    User DataBaseAdmin2 now has the same privileges granted to the original dbadmin user.

  3. As DataBaseAdmin2, enable your assigned roles with SET ROLE:

    => \c - DataBaseAdmin2;
You are now connected to database "VMart" as user "DataBaseAdmin2".
=> SET ROLE dbadmin, dbduser, pseudosuperuser;
SET ROLE

  4. Confirm the roles are enabled:

    => SHOW ENABLED ROLES;
name          | setting
-------------------------------------------------
enabled roles | dbduser, dbadmin, pseudosuperuser

2 - Object owner

An object owner is the user who creates a particular database object and can perform any operation on that object.

An object owner is the user who creates a particular database object and can perform any operation on that object. By default, only an owner (or a superuser) can act on a database object. In order to allow other users to use an object, the owner or superuser must grant privileges to those users using one of the GRANT statements.

See Database privileges for more information.

3 - PUBLIC user

All non-DBA (superuser) or object owners are PUBLIC users.

All non-DBA (superuser) or object owners are PUBLIC users.

Newly-created users do not have access to schema PUBLIC by default. Make sure to GRANT USAGE ON SCHEMA PUBLIC to all users you create.

See also